<template>
    <div class="shopcar-container">
        <div class="goods-list">
            <!-- 商品列表区 -->
            <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
			    <div class="mui-card-content">
				    <div class="mui-card-content-inner">
					    <mt-switch @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])" v-model="$store.getters.getGoodsSelected[item.id]"></mt-switch>
                        <img :src="item.thumb_path">
                        <div class="info">
                            <h1>{{item.title}}</h1>
                            <p>
                                <span class="price">￥{{item.sell_price}}</span>
                                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                                <!-- 问题：如何从购物车中获取商品的数量 -->
                                <!-- 1、可以创建一个空对象，然后循环购物车中所有的商品的数据，把当前
                                循环的ID作为对象的属性名，count值作为对象的属性值，这样当把所有商品循环一遍
                                就能得到一个对象： {82：1，89：3，。。。} -->
                                <a href="#" @click.prevent="remove(item.id,i)">删除</a>
                            </p>
                        </div>
				    </div>
			    </div>
		    </div>
        </div>

        <!-- 结算区域 -->
        <div class="mui-card">
			<div class="mui-card-content">
				<div class="mui-card-content-inner jiesuan">
					<div class="left">
                        <p>总计（不含运费）</p>
                        <p>已勾选商品<span class="red">{{$store.getters.getGoodsCountAndAmount.count}}</span>
                        件，总价￥<span class="red">{{$store.getters.getGoodsCountAndAmount.amount}}</span></p>
                    </div>
                    <mt-button type="danger">去结算</mt-button>
				</div>
                
			</div>
		</div>
    </div>
</template>

<script>
import numbox from '../subcomponents/shopcar_numbox.vue'
export default {
    data(){
        return {
            goodslist: [] //购物车中所有商品的数据
        }
    },
    created(){
        this.getGoodsList();
    },
    methods: {
        getGoodsList(){
            //获取到store中所有商品的id，拼接出用逗号分隔的字符串
            var idArr = [];
            this.$store.state.car.forEach(item=>{
                idArr.push(item.id)
            });
            //如果购物车没有商品则直接返回
            if(idArr.length <= 0){
                return;
            }
            //获取购物车商品列表
            this.$http.get('api/goods/getshopcarlist/' + idArr.join(",")).then(result=>{
                if(result.body.status === 0){
                    this.goodslist = result.body.message;
                }
            })
        },
        remove(id,index){
            //删除，从store中根据id删除，同时根据对应index删除组件中的数据
            this.goodslist.splice(index,1);
            this.$store.commit('removeFormCar',id);
        },
        selectedChanged(id,val){
            //每当点击开关，把最新的状态同步到store中
          this.$store.commit('updateGoodsSelected',{id,selected:val})
        }
    },
    components: {
        numbox
    }
}
</script>

<style scoped>
    .shopcar-container{
        background-color: #eee;
        overflow: hidden;
    }
    .shopcar-container .goods-list img {
        width: 60px;
        height: 60px;
    }
     .goods-list h1{
         font-size: 14px;
     }
     .goods-list .mui-card-content-inner {
         display: flex;
        align-items: center
     }
     .goods-list .info .price {
         color: red;
         font-weight: bold;
     }
     .info {
         display: flex;
         flex-direction: column;
         justify-content: space-between;
     }
     .jiesuan {
         display: flex;
         justify-content: space-between;
         align-items: center;
     }
     .red {
         color: red;
         font-weight: bold;
         font-size: 16px;
     }
</style>